Played one of the Fender 'Pawn Shop' series Excelsior amps (13W, 1X15, 2X12AX7 into 2X6V6, just 33#) at my local GC today...Very fun and interesting,...
Hard to imagine that anything wouldn't sound great through this. At 5W you will likely not have as much headroom, but the actual volume loss will be...